Governor for gasolene-engines.



PAT-ENTBD AUG'. 23, 1904.

N0. '1OO,158. f D. O. STOVER.

\ GOVERNOR PON OASOLENN ENGINES.

' ABPLIOATIOHIILED IAB. 22, 1904.

2 SHEETS-SHEET 1.

No Nonni..

I PATENTED AUG. 23, 1.904.

No. 768.158. l

\ D. '0. STOVER.

GOVERNOR EOE GAsoLENE ENGINES.

.nrEromIoN FILED un. sa, '1904.

N0 IODBL.

WMMW.

UNITED. STATESl `v Patented August 23, 1904.

PATENTV OFFICE.

rGOVERNOR Fon GsoLvE'NE-ENGINES.

SPECIFICATION forming part of Letters Patent No.` 768,158, dated August 23, 1904.

Application filed March 22, 19,64..

.To all whom if may concern: lBe it known that I, DANIEL C. STOVER, a citizen of the United States of America, resid- -ing at Freeport, in the county of'Stephenson and State of Illinois, have invented certain new and useful Improvements in Governors for Gasolene-Engines, of which the following is a specification. Y

4The object of my'invention is to provide mechanism for rendering as nearly uniform asv practicable the speed of gasolene-engines; and it consists of certain new and useful features of construction and combinations of parts especially devised to that end, all'as hereinafter fully described, and specifically pointed out in the claims. k A Referring to the accompanying drawings, which form a part of this specification, Figure 1 is atop plan View of a gasolene-engine provided with my improvements and I having parts thereof sectio\ned awaytobetter show the construction and arrangement of interior parts of the same. Fig.' 2 is` an enlarged detail view of parts lshown in Fig. l, some whereof are in different positions and relations from those shown inthe last-mentioned ligure. Fig. 3 is asection 'at the dotted line '3 in Fig.l 2 of parts there shown. Fig. lis a section atthe dotted line 4; in Fig. l of parts there shown.

Like letters of reference indicate corresponding parts throughout the several views. A, Fig. l, is the main frame of an engine, which has opposite bearings A' therein, to sup-` 3 5 port amain shaft, and a cylinder A2, (shown in central longitudinal section,) open at one end A-anol surrounded by a water-jacket A2.

B is a main shaft, having the central'portion thereof bent to form a double crank B'` and connecting-wrist B2 and mounted in bear:-` ings A' in the main frame A.

C is a piston adapted to slide in the cylinder A2. v.

C' is a pitman pivot-jointed by one end to the piston C and by the other end to the crank B'.-

D is a. balance-wheel fast tothe main shaft B. A driving-pulley (not shown) is also mounted fast on the shaft B.

' E is a circular cylinder-head having a mixing-chamber E', an exhaust-chamber E2, pro-f serial Nu. 199,474.. (No muda.)

vided with an eXhaust-valveopening E, and

a Water-chamber E21, formed therein, and serves to tightly close the outer end of the cylinder A2.

Fy is a valve adapted to iit into the valveseat F', and thereby close the mixing-chamber 55 E'. The valve Fis provided with a stem F2, projecting therefrom out through the cylinder-head'Eand terminating in a'disk F2, fast thereto. A compressed spring Fi is included between the cylinder-head E and the disk F3 60 and serves to hold the valve F normally closed.

G is a valve adapted to fit into the valveseat G', and thereby close the valve-opening E in the exhaust-chamber E2. The valve G is provided with astem G2, projecting therefrom inward throughthe cylinder-head Eand terminating in a disk G2, fast thereto. A compressed spring G4 is included between the cylinder-head E and disk G3 and serves to hold the valve G normally closed.

' H is a lever mounted, by means of a pivot H', on the 'horizontal lug H2, integral with the outside of the head Eand contacting with its free end the outer end of the lstem of the eX- haust-valve G.

I is a governor-gear, having a peripheral groove I' inl the hub I2 thereof, and is splined upon the main shaft B, so asto be freely slidable thereon.

J representsbell-cranks pivotally mounted 8O at their angles on bearings J', supported by lugs J2, fast to spokes J 3 of the balance-wheel D. The inner arms Ji of the bell-cranks J project into engagement with the groove I' in -the hub I2 of the gear I, and their outer arms 85 2 J 2 have governing-weights J secured totheir free ends. Powerful tension-springs J 7, actf ing through the bell-cranks J, normally mainj tain the gear I in the position shown in Fig. 2.

K is a non-rotatable -stub-shaft projecting 90 .transversely from the frame A.

K' is a gear-wheel meshing with the governor-gear I and rotatably mounted, by means ,of the hub K2, on the stub-shaft I K3 is a cam `fast to the free'end'of the hub 95 K2 of the gear-wheel K'.V Y

L is a rocking arm mounted at its lower end ona pivot-bearing L' on the main frame A and provided at its upper end with extendled horizontal jaws L2 L3 to providefor the IOO admission and mounting of parts to be described hereinafter and having a locking-recess L", Figs. 1 and 2, therein.

L5 is a roller mounted between the jaws L2 L3 of the arm L on the bearing LG and having its periphery contacting the periphery of the cam K3.

M is a connecting-rod jointed, by means of the pivot M', to the outer end of the lever H and by means of the pivot M2 between the jaws L2 L3 of the arm L.

Nis a detent mounted on a stationary pivotbearing N and adapted to be swung thereon alternately into and out of engagement with the locking-recess L* in the upper end of the rocking arm L and provided with a transversely-extending rigid arm N2, carrying a roller N3, contacting the outer face of the governor-gear I by reason of the action of the tension-spring N4 connecting such arm with a fixed bearing N5 on the machine-frame.

The spring G", Fig. 1, maintains the roller L5 in constant engagement with the cam-roller K3 and normally acts to keep the valve Gr closed in contact with its seat G.

Inasmuch -as my invention only relates to governors for gasolene-engines, I have purposely refrained from showing any of the mechanism thereof which was not necessary to an understanding of such invention.

Suppose an admixture of air and gasolenevapor is being drawn at intervals by suction through the opening of the valve F and from the mixing-chamber E/ into the closed end of the cylinder A2, where it is ignited in the usual manner, the impulse of each successive explosion of such mixture acting upon the piston C will reciprocate it with increasing rapidity until the speed of the engine exceeds a predetermined rate. As a result thereof centrifugal force will swing the governingweights J 2 apart from the positions shown in Fig. 2 to those shown in Fig 1 and acting through the bell-cranks J slide the sleeve I2 and governor gear I outward and therethrough swing the free end of the detent N from the position shown in Figs. 2 and 3 to that shown in Figs. 1 and 4 into engagement with the locking-recess LA1 in the arm L. Simultaneously with the engagement of the detent N with the locking-recess Li in the arm L the apex of the cam O of the cam-roller K3, acting upon the roller L5 and through the connecting-rod M, lever H, and cam-stem G2 and against the spring G4, opens and holds open the valve G of the exhaust-valve opening E until the speed of the engine falls below a predetermined rate, when centripetal force will swing the governing-weights J from the positions shown in Fig. 1 to that shown in Fig. 2, with the result that the detent N will have been disengaged fromits locking-recess L4 in the arm L, the cam-roller K3 will have turned from the position shown in Fig. f1 to that shown in Fig. 3, and the spring G", Fig.

1, will have closed the valve G against its` seat G. Immediately thereafter commingled air and gasolene-vapor will again be drawn at intervals through the opening of the valve F by suction from the mixing-chan'iber IC into the closed end of the cylinder A2, wherr` it will be ignited and communicate the impulses of its successive explosions to the piston C until the speed of the engine again exceeds the predetermined rate, which will then be again diminished in the manner and to the extent already hereinbefore indicated.

That I claim as new, and desire to secure by Letters Patent, is*

1. In a governor for gasolene-engines, in combination, a supporting-frame, a main shaft mounted therein, a governor-gear, splined on the main shaft to move endwise thereon and having a peripheral groove in the hub thereof, a balance-wheel fast to the main shaft, two bell-cranks pivotally mounted, at their angles, on bearings supported by the balancewheel, and having their inner arms projecting into engagement with the groove in the hub of the governor-gear, and their outer arms provided with governing-weights secured to their free ends, a gear-wheel, meshing` with the governor-gear and mounted on a bearing on the main frame, a cam carried by the hub of the gear-wheel, a rocking arm mounted, at its lower end, on a pivot-beariiig on the main frame and provided, at its upper end, with jaws and having a locking-recess therein, a roller mounted between the jaws of the loching-arm and having its periphery contacting the cam on the hub of the gear-wheel, means for maintaining the roller in engagement with the cam, a detent, mounted on a stationary pivot-bearing and adapted to be swun thereon alternately into and out of engagement with the locking-recess in the rocking arm, and provided with an arm carrying a roller contacting the outer face of the governor-gear and means for maintaining such roller in contact with such governor-gear, substati ally as described. j

2. In a governor for gasolenc-engines, in combination, a main frame, a cylinder supported thereby and having an exhzulst-valve opening in the head thereof, an exhaust-val ve, for closing such opening' therein, provided with a transverse stem, a spring encircling the valve-stem and normally acting to close such valve, a piston slidable in the cylinder, a main shaft provided with a crank, a rod connecting the piston with the crank of such main shaft, a governor-gear, splined on the main sha lt to move endwise thereon and having a peripheral groove in the hub thereof, a balance- .wheel fast to the main shaft, two bell-cranks pivotally mounted, at their angles, on bearings supported by the balance-wheel, and having their inner arms projecting into engagement with the groove in the hub of the governor-gear, and their outer arms provided with IOO governing-weights secured to their free"ends, a gear-wheel, meshing with the governor-gear and mounted on a bearing on the main frame,

a cam carried by the hub ofthe gear-wheel, a rocking arm mounted, at its lower end, on a pivot-bearing on the main frame and provided, at its upper vend, with jaws and having a locking-recess therein, a roller mounted between the jaws ofthe rocking arm and having its periphery contacting the cam on the hub of the gear-wheel, a pivotally-mounted lever contacting with its free end the outer end of the stem of the exhaust-valve, a rod pivotally Connecting its remaining end with a pivothearing 1n the Jaws of the rocking shaft, a detent, mounted on a stationary pivot-bearing and adapted to be swung thereon alternately into' and out of engagement with the lockingreeess in the rocking arm and provided with a transversely-extending arm carrying a roller contacting the outer face of the governorgear, and a spring maintainingsueh roller in Contact with the outer face of such governorgear, substantially as described.

In testimony whereof I have signed my name l i to this specification in the presence of two subsorlbing witnesses.

DANIEL C. STOVER.

Witnesses:

H. H. ANTRIM, W. C. PFENDER. 

